dal c

I have an anti lag option on my unichip and i have heard anti lag kills the turbo,does anyone know if this is true as i don't want to kill the turbo,its a tdo5 20g

The Pink Ninja

iTrader: (23)

Depends how aggressive it is but yes kills turbos, Headers, up-pipes and down pipes if used constantly, lol

MATT93

Im considering antilag on my STI, apparently its 'ok' if you run one thats not too aggressive - though its not recommended.

dal c

i know this probably sounds stupid but how would you know if its to aggressive,or is it something that i would have to ask the tuning company that fitted the uni chip

bludgod

iTrader: (3)

yes - there are some different options usually as to how aggressive you want the system to be in terms of fuel target and timing used. Make no mistake though it's all harsh on the exhaust components. Your basically shooting half burnt fuel at your turbo instead of steamy hot exhaust gas. The more boost and power you make ready for the next corner exit the more heat and stress you'll be putting on all the components in the way.

I recommend moving the o2 sensor to the downpipe instead of the headers if your going to do it - at least it will be a little cooler and if it does break up it will only head towards the lusers behind you via the exhaust pipe rather than in and through your nice TD05 turbo.

dal c

Glad i asked for advice as it seems like its not the best thing to do,is there any other way of reducing lag apart from keeping the rev range up ?

bludgod

iTrader: (3)

well how do you define lag - how long does it currently take to return to maximum boost between gear shifts or when returning to throttle from braking/cornering. Or do you just want cool pop pop sounds?

bludgod

iTrader: (3)

the other thing to note is the lack of assisted braking power when running antilag, unless your going to hook up a vac pump then your brakes are going to feel terrible.

neil-h

The sort of anti-lag you're looking at from a chip is going to be fairly mild because it's limited by the idle control valve. Proper anti-lag (think rally cars) needs a throttle kick to get more air into the cylinders and that's where you'll see the really big exhaust temperatures which'll really wreck manifolds/turbos/cats (that's not to say mild anti-lag won't cause damage but that's more due to prolonged use).

mtb

its not anti lag .its playing with fuel and timing waste of time

96sti

Every time i switch antilag on mine something seems to go wrong haha ive got a very agressive antilag but turbo never failed standard headers will cope a little more than aftermarket headers

dal c

right ive decided that anti lag isn't the best way to go as i don't want to kill my car ,my turbo starts to kick in at 3000 revs and boosts all the way to 6500 before losing a bit ,is there away to bring the boost in a bit earlier (and i love the pop pop sound just dont know how to get it lol)

bludgod

iTrader: (3)

boost at 3000 - how much boost? Any boost at all I'd say your doing OK for a big 20g turbo.

Really its a question for whoever is mapping your unichip though as they would know the car and the mods better.

neil-h

That's how anti-lag works in a nutshell. Yes as you say the actual effect will be small if you're relying purely on the idle air flow but it's essentially the same thing.

96sti

Rotate the manifold shorten the pipework

B16fun

iTrader: (2)

I remember speaking to Andy Forrest via email about anti-lag and he advised that true anti-lag does kill turbos. The wrc cars would go through a turbo on every event. What we get on the road is more for the sound than really contributing to the performance by getting rid of lag. Ultimately true anti-lag works by dumping fuel in before the hotside of the turbo so that the expulsions keep the turbo spooled up when there is limite exhaust gas doing the job when on a closed throttle.
Andy.